10B. The Threat from SpaceThe 174 colored dots in these images of Earth are places where meteorites ... upper atmosphere.1972년 8월 10일에, 그 가로가 5미터, 무게가 150톤인 물체가 상층 대기권을 통해 여행했다.Hundreds of people saw its ... the sun's light onto the Earth, and for days people in Europe could read newspapers outdoors at